<!DOCTYPE html>
<HTML>
<HEAD>
    <TITLE> ZTREE DEMO - beforeExpand / onExpand && beforeCollapse / onCollapse</TITLE>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <link rel="stylesheet" href="../../../css/demo.css" type="text/css">
    <link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">
    <script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>
    <script type="text/javascript" src="../../../js/jquery.ztree.core.js"></script>
    <!--  <script type="text/javascript" src="../../../js/jquery.ztree.excheck.js"></script>
      <script type="text/javascript" src="../../../js/jquery.ztree.exedit.js"></script>-->
    <SCRIPT type="text/javascript">
        <!--
        var setting = {
            view: {
                selectedMulti: false
            },
            data: {
                key: {
                    title: "t"
                },
                simpleData: {
                    enable: true
                }
            },
            callback: {
                beforeClick: beforeClick,
                beforeCollapse: beforeCollapse,
                beforeExpand: beforeExpand,
                onCollapse: onCollapse,
                onExpand: onExpand
            }
        };

        var zNodes = [
            {id: 1, pId: 0, name: "可折腾的父节点 1", t: "我很普通，随便 展开/折叠 我吧", open: false},
            {id: 11, pId: 1, name: "叶子节点 - 1", t: "我老爸很普通，随便折腾他吧"},
            {id: 12, pId: 1, name: "可折腾的父节点 2", t: "我和我老爸都很普通，随便折腾我和他吧", open: false},
            {id: 121, pId: 12, name: "父节点 - 121", t: "我老爸很普通，随便折腾他吧", open: true},
            {id: 1211, pId: 121, name: "父节点 - 1211", t: "我老爸很普通，随便折腾他吧", open: false},
            {id: 1212, pId: 1211, name: "叶子节点 - 1212", t: "我老爸很普通，随便折腾他吧"},
            {id: 1213, pId: 121, name: "父节点 - 1213", t: "我老爸很普通，随便折腾他吧", open: false},
            {id: 1214, pId: 1213, name: "叶子节点 - 1214", t: "我老爸很普通，随便折腾他吧"},
            {id: 123, pId: 12, name: "叶子节点 - 23", t: "我老爸很普通，随便折腾他吧"},
            {id: 13, pId: 1, name: "叶子节点 - 3", t: "我老爸很普通，随便折腾他吧"},
            {id: 2, pId: 1, name: "无法折叠的父节点", t: "休想让我折叠起来...除非你用 expandAll 方法", open: false, collapse: false},
            {id: 21, pId: 2, name: "叶子节点2 - 1", t: "哈哈哈，我老爸NB吧，不能折叠吧？"},
            {id: 22, pId: 21, name: "叶子节点2 - 2", t: "哈哈哈，我老爸NB吧，不能折叠吧？"},
            {id: 23, pId: 21, name: "叶子节点2 - 3", t: "哈哈哈，我老爸NB吧，不能折叠吧？"},
            {id: 3, pId: 2, name: "无法展开的父节点", t: "就凭你也想展开我？难呀...嘿嘿, 除非你用 expandAll 方法", open: false, expand: false},
            {id: 31, pId: 3, name: "叶子节点3 - 1", t: "居然让你看到了...莫非你用了全部节点展开？"},
            {id: 32, pId: 31, name: "叶子节点3 - 2", t: "居然让你看到了...莫非你用了全部节点展开？"},
            {id: 33, pId: 31, name: "叶子节点3 - 3", t: "居然让你看到了...莫非你用了全部节点展开？"},
            {id: 4, pId: 3, name: "空空的父节点 1", t: "一无所有...除了我自己", isParent: true, open: false}
        ];

        var log, className = "dark";

        function beforeClick(treeId, treeNode) {
            if (treeNode.isParent) {
                return true;
            } else {
                alert("这个 Demo 是用来测试 展开 / 折叠 的...\n\n去点击父节点吧... ");
                return false;
            }
        }

        function beforeCollapse(treeId, treeNode) {
            className = (className === "dark" ? "" : "dark");
            showLog("[ " + getTime() + " beforeCollapse ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
            return (treeNode.collapse !== false);
        }

        function onCollapse(event, treeId, treeNode) {
            showLog("[ " + getTime() + " onCollapse ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
        }

        function beforeExpand(treeId, treeNode) {
            className = (className === "dark" ? "" : "dark");
            showLog("[ " + getTime() + " beforeExpand ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
            return (treeNode.expand !== false);
        }

        function onExpand(event, treeId, treeNode) {
            showLog("[ " + getTime() + " onExpand ]&nbsp;&nbsp;&nbsp;&nbsp;" + treeNode.name);
        }

        function showLog(str) {
            if (!log) log = $("#log");
            log.append("<li class='" + className + "'>" + str + "</li>");
            if (log.children("li").length > 8) {
                log.get(0).removeChild(log.children("li")[0]);
            }
        }

        function getTime() {
            var now = new Date(),
                h = now.getHours(),
                m = now.getMinutes(),
                s = now.getSeconds(),
                ms = now.getMilliseconds();
            return (h + ":" + m + ":" + s + " " + ms);
        }

        function expandNode(e) {
            var zTree = $.fn.zTree.getZTreeObj("treeDemo"),
                type = e.data.type,
                nodes = zTree.getSelectedNodes();
            if (type.indexOf("All") < 0 && nodes.length == 0) {
                alert("请先选择一个父节点");
            }

            if (type == "expandAll") {
                zTree.expandAll(true);
            } else if (type == "collapseAll") {
                zTree.expandAll(false);
            } else {
                var callbackFlag = $("#callbackTrigger").attr("checked");
                for (var i = 0, l = nodes.length; i < l; i++) {
                    zTree.setting.view.fontCss = {};
                    if (type == "expand") {
                        zTree.expandNode(nodes[i], true, null, null, callbackFlag);
                    } else if (type == "collapse") {
                        zTree.expandNode(nodes[i], false, null, null, callbackFlag);
                    } else if (type == "toggle") {
                        zTree.expandNode(nodes[i], null, null, null, callbackFlag);
                    } else if (type == "expandSon") {
                        zTree.expandNode(nodes[i], true, true, null, callbackFlag);
                    } else if (type == "collapseSon") {
                        zTree.expandNode(nodes[i], false, true, null, callbackFlag);
                    }
                }
            }
        }

        $(document).ready(function () {
            $.fn.zTree.init($("#treeDemo"), setting, zNodes);
            $("#expandBtn").bind("click", {type: "expand"}, expandNode);
            $("#collapseBtn").bind("click", {type: "collapse"}, expandNode);
            $("#toggleBtn").bind("click", {type: "toggle"}, expandNode);
            $("#expandSonBtn").bind("click", {type: "expandSon"}, expandNode);
            $("#collapseSonBtn").bind("click", {type: "collapseSon"}, expandNode);
            $("#expandAllBtn").bind("click", {type: "expandAll"}, expandNode);
            $("#collapseAllBtn").bind("click", {type: "collapseAll"}, expandNode);
        });
        //-->
    </SCRIPT>
</HEAD>

<BODY>
<h1>展开 / 折叠父节点控制</h1>
<h6>[ 文件路径: core/expand.html ]</h6>
<div class="content_wrap">
    <div class="zTreeDemoBackground left">
        <ul id="treeDemo" class="ztree"></ul>
    </div>
    <div class="right">
        <ul class="info">
            <li class="title"><h2>1、beforeCollapse / onCollapse<br/>&nbsp;&nbsp;beforeExpand / onExpand 事件回调函数控制</h2>
                <ul class="list">
                    <li>利用 collapse / expand 事件回调函数 可以控制父节点是否允许 展开 / 折叠，这里简单演示如何监控此事件</li>
                    <li><p>试试看：<br/>
                        &nbsp;&nbsp;&nbsp;&nbsp;<input type="checkbox" id="callbackTrigger" checked/> expandNode 方法是否触发
                        callback<br/>
                        &nbsp;&nbsp;&nbsp;&nbsp;单个节点--[ <a id="expandBtn" href="#" title="不想展开我就不展开你..."
                                                           onclick="return false;">展开</a> ]
                        &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseBtn" href="#" title="不想折叠我就不折叠你..."
                                                     onclick="return false;">折叠</a> ]
                        &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="toggleBtn" href="#" title="你想怎样？..." onclick="return false;">展开
                            / 折叠 切换</a> ]<br/>
                        &nbsp;&nbsp;&nbsp;&nbsp;单个节点（包括子节点）--[ <a id="expandSonBtn" href="#" title="不想展开我就不展开你..."
                                                                  onclick="return false;">展开</a> ]
                        &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseSonBtn" href="#" title="不想折叠我就不折叠你..."
                                                     onclick="return false;">折叠</a> ]<br/>
                        &nbsp;&nbsp;&nbsp;&nbsp;全部节点--[ <a id="expandAllBtn" href="#" title="不管你有多NB，统统都要听我的！！"
                                                           onclick="return false;">展开</a> ]
                        &nbsp;&nbsp;&nbsp;&nbsp;[ <a id="collapseAllBtn" href="#" title="不管你有多NB，统统都要听我的！！"
                                                     onclick="return false;">折叠</a> ]</p>
                    <li><p><span class="highlight_red">使用 zTreeObj.expandNode 方法，详细请参见 API 文档中的相关内容</span><br/>
                        collapse / expand log:<br/>
                        <ul id="log" class="log"></ul>
                        </p>
                    </li>
                </ul>
            </li>
            <li class="title"><h2>2、setting 配置信息说明</h2>
                <ul class="list">
                    <li class="highlight_red">事件回调函数的使用，详细请参见 API 文档中 setting.callback 的相关内容</li>
                    <li class="highlight_red">如果需要调整 展开 / 折叠 的动画效果， 详细请参见 API 文档中 setting.view.expandSpeed 的相关内容</li>
                </ul>
            </li>
            <li class="title"><h2>3、treeNode 节点数据说明</h2>
                <ul class="list">
                    <li>对 节点数据 没有特殊要求，用户可以根据自己的需求添加自定义属性</li>
                </ul>
            </li>
        </ul>
    </div>
</div>
</BODY>
</HTML>